/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncCore/Source/ConcertSyncCore/Public/ConcertWorkspaceData.h
Whether the package data can safely be embedded in 'PackageData' without overflow (ex 3GB overflows int32 type). Not necessarily reasonable, but safe.
static bool CanEmbedPackageDataAsByteArray ( uint64 PackageDataSize )